What cellphone should i buy?

I liked the Iphone 6, samsung galaxy s6, samsung galaxy 6 edge, samsung galaxy V, lenovo, windows, and O+ 360/air shuffle, but I only need one cellphone to choose.

Well, if you love taking photos with your cellphone, all the Galaxy line is great for that. That's like their main catch. If you got the money, get the S6 instead of a S5 as their price difference isn't that much as long as you are buying them by contract, since buying it unlocked is way too expensive and I wouldn't recommend it.